Rückschlagventil für medizinische Infusionsschläuche und dergleichen

摘要

A check valve (6) for medical infusion lines and the like, including a diaphragm (8) made of elastically deformable material inserted between an upstream passageway (4) and a downstream passageway (5) and cooperating with an annular valve seat (14) to keep the check valve (6) normally closed. The annular valve seat (14) is formed by a front surface of the first tubular element (2), and the diaphragm consists of the bottom wall (9) of a cup-shaped element (7) arranged coaxially with the upstream and downstream passageways (4, 5)